Brockhoff began coaching at Eastern Suburbs in 1963 and guided them to a fourth grade premiership win in his first season as a coach. He became the first grade coach of
Sydney Uni Football Club in 1967, a position he held for eight seasons, winning three premierships. Brockhoff coached
New South Wales in three stints from 1970–71, 1973–74 and 1978. His coaching philosophy was based on an aggressive, dominant forward pack that was brutal at the ruck and scrum in combination with an accurate kicker at five-eighth. Brockhoff was known for firing-up his players with stirring verbal imagery of what the team needed to do such as
"make every line-out a dockyard brawl", and use the
"famous Vickers machine-gun tripod defence". After the 1974 season, he was appointed coach of
Australia. Brockhoff achieved victory in his first Test series in 1975 when the Wallabies defeated in two fiery matches at Sydney and Brisbane, and he went on to guide the side to two further series clean-sweeps at home against and . He was renowned in this period as the man who had instilled renewed pride in the Wallaby jersey. Brockhoff had a sometimes testy relationship with other Australian rugby administrators due to his confrontational style and as a result of coaching his sides to be abrasive and aggressive. He coached the Wallabies on the
1975–76 tour of Britain and Ireland, although he was banned from talking to the media. The
ARFU had made it a priority to ensure the tour was an off-field success after media recriminations and accusations of unsavoury play following the England series in Australia. The Wallabies lost against three of the home nations on the tour before gaining wins against Ireland and the United States on the way home. Brockhoff was replaced as coach by
Bob Templeton in June 1976. He was recalled to the Australian coaching position for the 1979 season, after incumbent
Daryl Haberecht had stepped down. The final match of his tenure came in memorable circumstances when Australia beat New Zealand 12–6 in a one-off Test at the
Sydney Cricket Ground to regain the
Bledisloe Cup. The vision of Brockhoff grabbing the Bledisloe Cup and running around the perimeter of the SCG is one of the lasting images in Australian rugby history. From this match onwards the Wallabies became much harder to beat than previously. ==Later life==